Introduction
The default version of java provided in the latest raspbian images are outdated, so we are going to install from the ppa:webupd8team/java repository instead. Please note that add-apt-repository ppa:webupd8team/java will not work, so we will need to add the repository manually.
Installation
- First we need to register the GPG key (required for authentication). So lets create a temporary file and paste the public key there.
nano key.txt-----BEGIN PGP PUBLIC KEY BLOCK----- Version: SKS 1.1.5 Comment: Hostname: keyserver.ubuntu.com mI0ES9/P3AEEAPbI+9BwCbJucuC78iUeOPKl/HjAXGV49FGat0PcwfDd69MVp6zUtIMbLgkU OxIlhiEkDmlYkwWVS8qy276hNg9YKZP37ut5+GPObuS6ZWLpwwNus5PhLvqeGawVJ/obu7d7 gM8mBWTgvk0ErnZDaqaU2OZtHataxbdeW8qH/9FJABEBAAG0DUxhdW5jaHBhZCBWTEOImwQQ AQIABgUCVsN4HQAKCRAEC6TrO3+B2tJkA/jM3b7OysTwptY7P75sOnIu+nXLPlzvja7qH7Wn A23itdSker6JmyJrlQeQZu7b9x2nFeskNYlnhCp9mUGu/kbAKOx246pBtlaipkZdGmL4qXBi +bi6+5Rw2AGgKndhXdEjMxx6aDPq3dftFXS68HyBM3HFSJlf7SmMeJCkhNRwiLYEEwECACAF Akvfz9wCGwMGCwkIBwMCBBUCCAMEFgIDAQIeAQIXgAAKCRDCUYJI7qFIhucGBADQnY4V1xKT 1Gz+3ERly+nBb61BSqRx6KUgvTSEPasSVZVCtjY5MwghYU8T0h1PCx2qSir4nt3vpZL1luW2 xTdyLkFCrbbIAZEHtmjXRgQu3VUcSkgHMdn46j/7N9qtZUcXQ0TOsZUJRANY/eHsBvUg1cBm 3RnCeN4C8QZrir1CeA== =CziK -----END PGP PUBLIC KEY BLOCK-----
You can get this key directly from the launchpad page (refer to the Signing Key link under “Technical details about this PPA”).
- Now use
apt-keyto register the keysudo apt-key add key.txt - Add the repository to
/etc/apt/sources.list.d/and perform an updateecho "deb http://ppa.launchpad.net/webupd8team/java/ubuntu xenial main" | sudo tee /etc/apt/sources.list.d/webupd8team-java.list echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu xenial main" | sudo tee -a /etc/apt/sources.list.d/webupd8team-java.listsudo apt-get update - Install Java 8 SDK
sudo apt-get install oracle-java8-installer - Verify that we have successfully installed java
pi@raspberrypi:~# java -version java version "1.8.0_161" Java(TM) SE Runtime Environment (build 1.8.0_161-b12) Java HotSpot(TM) Client VM (build 25.161-b12, mixed mode)
Switching between versions
If you have multiple jvms installed and you want to switch back to a specific version of java you can do the following:
Option 1: Using update-java-alternatives (Recommended)
- List the available versions in your system
update-java-alternatives -l - Copy the key of the first column of the result of your target version
java-8-oracle 1081 /usr/lib/jvm/java-8-oracle - Execute the set command using the previously copied key
update-java-alternatives -s java-8-oracle
Option 2: Using oracle-java8-set-default package
sudo apt-get install oracle-java8-set-default
This worked perfectly, thanks so much 🙂
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Thank you. I have tried it but if I try to install the java8 the system say that java8 is not available.
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sudo apt-get update produced a response that ended with:
N: Ignoring file ‘webupd8team-java-list’ in directory ‘/etc/apt/sources.list.d/’ as it has no filename extension
I wasn’t able to get any farther. What did I do wrong?
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I made it to number 4 and the package is missing or.
sudo apt-get install oracle-java8-installer
Reading package lists… Done
Building dependency tree
Reading state information… Done
Package oracle-java8-installer is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package ‘oracle-java8-installer’ has no installation candidate
pi@raspberrypi:~ $ java -version
Error occurred during initialization of VM
Server VM is only supported on ARMv7+ VFP
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Due to the changes by Oracle, the PPA has been discontinued and no longer available (See https://launchpad.net/~webupd8team/+archive/ubuntu/java).
You can either download and install the jdk 8 manually from the Oracle website or use OpenJDK instead (see: https://adoptopenjdk.net/).
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